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(No Model.)

0. H. HASKINS. ELECTRIC GAS LIGHTER.

No. 393,304. Patented Nov. 20, 1888.

UNITED STATES PATENT OEErcE.

CHARLES H. HASKINS, OF NEW YORK, N. Y.

ELECTFHC GAS=LIGHTER.

SPECIFICATION forming part of Letters Patent. No. $93,304:,c1atefi November 20, 1888.

Application filed June 7, 1887. Serial No. 340,567. (No model.)

To all whom, it may concern:

Be it known that 1, CHARLES H. Hnsrcrns, a citizen of the United States, residing in New York, in the county and State of New York, have invented certain new and useful Improvements in Electric Gas-Lighters, of which the following is a specification.

The invention relates to the class of electric gaslighting devices in which the gas is ignited when the gas-cock is turned to permit the flow of the gas; and the main object of the invcntion is to provide means for always keeping the gas ignited so long as the gas-cock is turned so as to permit any flow, and to relight it as often as itbecomes extinguished while flowing.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a view of a portion of the gaspipe and gas-burner, with the electric circuits in diagram. Fig. 2 is a top view of the burner. Fig. 3 shows how the circuit is made and broken by turning the gas-coek.

In the drawings, A represents the gas-bu rner, B a section of the gas-pipe, and O the gas-cock. D is an induction-coil, and E the battery for supplying the electric current to the primary of the coil. F is a thermostatic strip attached at one end to the ring G, of insulating mate rial, encircling the burner A. Normally the thermostatic strip F rests against the side of the burner A, so as to make an electrical connection therewith; but it is made and adjusted so that when heated it separates from the burner A. The gaseock O is preferably of non-conducting material; but it has upon it the flange or ring R, of conducting material. The ring does not extend entirely around the flange, a small space being filled with non-conducting material, (shown at It in Fig. 3.) The wire 1 is the primary wire of the coil, and includes in its circuit the armature a and the battery E. The ring R is so placed upon the flange of the gas-cock G that when the gas is turned off one of the ends of the wire P rests upon the insulated portion and breaks the circuit at that point. The primary circuit is completed except at this point, and may be traced from the battery E through the armature a, coil D, to the ring R, then to the thermostatic strip F, the burner A, and pipe B, back to the battery E. The secondary of the coil may be traced from the coil D through the insulating-ring G to the sparking -points 5 and 8* above the burner, then to the burner and the pipe 13 back to the coil D.

The operation is as follows: As soon as the gas-cock is turned to permit the flow of gas the insulating-space It upon the ring is moved from under the end of the wire 1? and the circuit of the primary is made complete. This immediately causes the armature a to vibrate in a well-known manner, and the induced current in the secondary wire S causes a spark across the points .9 and s igniting the gas. As soon as the gas is ignited the metal burner A is heated. The heat is communicated to the thermostatic strip F, which separates from the burner A, thus opening the primary current. This stops the vibration of the lever a, and thus it remains as long as the gas is burning and the burner A is kept warm. If, now, the gas becomes extinguished while flowing, the burner A immediately commences to cool, and as soon as it is cooled sufficiently the thermo static strip F returns to its normal position in contact with the burner. As soon as this takes place theprimary circuit is again closed, causing the vibration of the armature a. The induced secondary current makes a spark across the points 5 and 5", again igniting the gas, and this operation, as will readily be understood, will be automatically repeated as often as the gas becomes extinguished.

It will be seen that by the proper adjust ment of the length of the insulating-space R in the ring R and the positions of the ends of the wires P brushing against it the primary circuit may be completed even if the gas-cock O is turned but very slightly and the flow of gas therefore very small.

This invention will prevent the escape of gas from burners that are left open, or where the gas has become extinguished while flowing, and thus the various accidents that occur from escaping gas will be avoided.

I claim as my invention 1. The combination, with a gasburner, a primary electric circuit, and a thermostatic strip, said strip serving to complete the circuit through said burner when 'cold and to open ICO said circuit when heated, of a secondary elecscribed my name this 1st day of June, A. D. tric circuit for igniting the gas when the pri- 1887. mary circuit is completed.

2. The combination of the burner A, strip CHARLES HASKINS' in 5 F, ring R, andinduction-coil D with circuits P Vitncsses:

and S, substantially as described. DANL. W. EDGECOMB,

In testimony whereof I have hereunto sub- CHARLES A. TERRY. A 

